移动通信中回声消除算法的研究  

Study on the Echo Cancellation Algorithm in Mobile Communication

作　　者：李丽[1] 姚仲敏[1] 吴丹[1] 

机构地区：[1]齐齐哈尔大学通信学院,黑龙江齐齐哈尔161006

出　　处：《测控技术》2010年第4期19-21,26,共4页Measurement & Control Technology

摘　　要：对移动通信中回声消除算法的传统LMS算法和LMS/F组合算法进行研究后,提出了一种改进的LMS算法。这种算法在收敛初期收敛速度较快,而当趋于稳定时,稳态误差较小。该算法能够明显加快收敛速度,而且更加稳定。同时,与去相关技术相结合,使得最终的回声消除效果更好。After the traditional LMS algorithm and LMS/F combining algorithm are studied,an improved LMS algorithm is proposed.At the beginning of convergence,the step size iterates with a larger value.When the algorithm to achieve stability,the step size becomes smaller to reduce the steady-state error.The algorithm not only significantly speeds up the convergence rate,but also is more stable.At the same time,it combines de-correlation technology,and finally the effect of echo cancellation is gotten better.

关 键 词：回声消除 去相关 LMS 

分 类 号：TN911.7[电子电信—通信与信息系统]